Fused salt storage tank of groove type photo-thermal power station

Abstract

The utility model discloses a fused salt storage tank of a trough type photo-thermal power station, which is applied to the field of trough type photo-thermal power stations and is characterized in that a tank body is fixedly mounted at the top of a concrete base, a bonding layer is fixedly mounted on the right side of the tank body, and a thermal insulation layer is fixedly mounted on the right side of the bonding layer; an anti-crack protection layer is fixedly mounted on the right side of the heat preservation layer, a refractory brick layer is fixedly mounted on the right side of the anti-crack protection layer, an interlayer is fixedly mounted on the right side of the refractory brick layer, the heat preservation effect of the tank body is improved, and the use of the device is improved; an inner container is fixedly mounted on the right side of the interlayer, and epoxy primer is fixedly mounted on the right side of the inner container. A polyethylene coating is fixedly mounted on the right side of the epoxy primer, copolymer glue is fixedly mounted on the right side of the polyethylene coating, and a polymer composite anti-corrosion layer is fixedly mounted on the right side of the copolymer glue, so that the molten salt corrosion resistance of the storage tank is improved, and the service life of the tank body is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of trough type solar thermal power stations, and in particular relates to a molten salt storage tank of a trough type solar thermal power station. Background Art

[0002] Molten salt tanks play an important role in CSP plants and are the core of new energy storage CSP plants. Their high heat storage capacity and high stability not only enable CSP plants to function in rainy weather, but also provide important support for solving intermittent problems of new energy sources such as photovoltaic and wind power in the process of building new power systems. In CSP plants, the molten salt tank link can adopt single tank, double tank and multi-tank systems. The single tank molten salt energy storage system has a simple structure and low cost, and is suitable for small-area heating and other fields.

[0003] The heat storage system is an indispensable component of a trough solar thermal power station, and the molten salt storage tank is one of the most important equipment in the heat storage system. During the operation and shutdown of the power station, the molten salt in the molten salt tank must maintain a temperature above the solidification point and must always be in a molten state. The temperature of the molten salt in the hot tank must be maintained at around a suitable temperature. In addition, the existing molten salt storage tanks have poor insulation effects, which can easily cause molten salt crystallization, resulting in a decrease in the thermal conductivity of the molten salt, and even molten salt solidification. At the same time, the existing molten salt is composed of alkali metals or alkaline earth metals and halides, silicates, carbonates, nitrates, and phosphates, which are corrosive. Long-term storage in the tank body is prone to corrosion, which can easily damage the inner wall of the tank, thereby affecting the service life of the tank body. Utility Model Content

[0004] The utility model aims to provide a molten salt storage tank for a trough-type solar thermal power station, which has the advantages of being convenient for heat preservation inside the tank and anti-corrosion of the inner wall of the tank.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a molten salt storage tank of a trough type solar thermal power station, a tank body is fixedly installed on the top of the concrete base, a bonding layer is fixedly installed on the right side of the tank body, a thermal insulation layer is fixedly installed on the right side of the bonding layer, an anti-cracking protective layer is fixedly installed on the right side of the thermal insulation layer, a refractory brick layer is fixedly installed on the right side of the anti-cracking protective layer, a partition layer is fixedly installed on the right side of the refractory brick layer, an inner liner is fixedly installed on the right side of the partition layer, an epoxy primer is fixedly installed on the right side of the inner liner, a polyethylene coating is fixedly installed on the right side of the epoxy primer, a copolymer glue is fixedly installed on the right side of the polyethylene coating, and a polymer composite anti-corrosion layer is fixedly installed on the right side of the copolymer glue.

[0006] The above technical solution is adopted: the electric heating tube inside the annular electric heating rod sleeve heats the inside of the tank body, and then the insulation layer installed on the right side of the internal bonding layer of the tank body insulates the inside of the tank body to prevent heat loss, and then the anti-cracking protective layer and the refractory brick layer on the right side of the insulation layer block the high heat inside the interlayer to prevent damage to the insulation layer caused by excessive heat, improve the insulation effect of the tank body, avoid crystallization of molten salt, and improve the use of the device. An inner liner is installed inside the interlayer, and an epoxy primer is installed on the inner wall of the inner liner. After a polyethylene coating is installed on the surface of the epoxy primer to protect the inner wall of the tank, a polymer composite anti-corrosion layer is installed on the right side of the copolymer glue to treat the inside of the tank body. This can effectively improve the tank's ability to resist molten salt corrosion, avoid corrosion to the inside of the tank body, and increase the service life of the tank body.

[0007] The utility model is further configured that a salt inlet pipe and a salt outlet pipe are fixedly installed on the left and right sides of the tank body, and a valve is fixedly installed on one side of the salt inlet pipe and the salt outlet pipe.

[0008] The above technical solution is adopted to facilitate the feeding and discharging of molten salt.

[0009] The utility model is further configured that an annular electric heating rod sleeve is fixedly installed inside the partition, an electric heating pipe is fixedly installed inside the annular electric heating rod sleeve, a flange is fixedly installed on the left side of the annular electric heating rod sleeve, a mounting seat is fixedly installed on the left side of the flange, and an electric heating pipe connector is fixedly installed on the left side of the mounting seat.

[0010] Adopting the above technical solution makes it easy to heat the inside of the tank.

[0011] The utility model is further configured that the thermal insulation layer is made of non-flammable composite expanded polystyrene.

[0012] The above technical solution is adopted to facilitate improving the thermosetting property inside the tank body.

[0013] The utility model is further configured that the polymer composite anti-corrosion layer is Fushimi Blue 418 anti-corrosion material.

[0014] The above technical solution is adopted to facilitate improving the corrosion resistance inside the tank body.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The utility model installs a heat preservation structure inside the tank body, and the electric heating tube inside the annular electric heating rod sleeve heats the inside of the tank body, and then the heat preservation layer installed on the right side of the internal bonding layer of the tank body insulates the inside of the tank body to prevent heat loss, and then the anti-cracking protective layer and the refractory brick layer on the right side of the heat preservation layer block the high heat inside the interlayer to prevent the heat preservation layer from being damaged by excessive heat, thereby improving the heat preservation effect of the tank body, preventing the crystallization of molten salt, and improving the use of the device;

[0017] 2. The utility model installs an anti-corrosion structure inside the inner liner, installs the inner liner inside the partition, installs an epoxy primer on the inner wall of the inner liner, installs a polyethylene coating on the surface of the epoxy primer to protect the inner wall of the tank, and then installs a polymer composite anti-corrosion layer on the right side of the copolymer glue to perform anti-corrosion treatment on the inside of the tank, which can effectively improve the corrosion resistance of the storage tank to molten salt, avoid corrosion to the inside of the tank, and increase the service life of the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0020] Figure 3 The utility model is Figure 2 A partial enlarged view of point A in the middle.

[0021] Figure numerals: 1. concrete base; 2. tank body; 3. salt inlet pipe; 4. salt outlet pipe; 5. valve; 6. bonding layer; 7. insulation layer; 8. anti-cracking protective layer; 9. refractory brick layer; 10. interlayer; 11. annular electric heating rod sleeve; 12. electric heating pipe; 13. flange; 14. mounting seat; 15. electric heating pipe connector; 16. liner; 17. epoxy primer; 18. polyethylene coating; 19. copolymer glue; 20. polymer composite anti-corrosion layer. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] refer to Figure 1 , Figure 2 , Figure 3A molten salt storage tank of a trough type solar thermal power station, a tank body 2 is fixedly installed on the top of a concrete base 1, a bonding layer 6 is fixedly installed on the right side of the tank body 2, a thermal insulation layer 7 is fixedly installed on the right side of the bonding layer 6, an anti-cracking protective layer 8 is fixedly installed on the right side of the thermal insulation layer 7, a refractory brick layer 9 is fixedly installed on the right side of the anti-cracking protective layer 8, and a partition 10 is fixedly installed on the right side of the refractory brick layer 9, the inside of the tank body 2 is heated by an electric heating tube 12 inside an annular electric heating rod sleeve 11, and then the thermal insulation layer 7 installed on the right side of the internal bonding layer 6 of the tank body 2 insulates the inside of the tank body 2 to prevent heat loss, and then the anti-cracking protective layer 8 and the refractory brick layer 9 on the right side of the thermal insulation layer 2 block the high heat inside the partition 10 to prevent damage to the thermal insulation layer 7 caused by excessive heat, thereby improving the thermal insulation effect of the tank body 2, preventing crystallization of molten salt, and improving the use of the device.

[0025] refer to Figure 2 A salt inlet pipe 3 and a salt outlet pipe 4 are fixedly installed on the left and right sides of the tank body 2, and a valve 5 is fixedly installed on one side of the salt inlet pipe 3 and the salt outlet pipe 4. By setting the salt inlet pipe 3 and the salt outlet pipe, the molten salt feeding and discharging are convenient.

[0026] refer to Figure 2 An annular electric heating rod sleeve 11 is fixedly installed inside the partition 10, an electric heating pipe 12 is fixedly installed inside the annular electric heating rod sleeve 11, a flange 13 is fixedly installed on the left side of the annular electric heating rod sleeve 11, a mounting seat 14 is fixedly installed on the left side of the flange 13, and an electric heating pipe connector 15 is fixedly installed on the left side of the mounting seat 14. By arranging the annular electric heating rod sleeve 11 and the electric heating pipe 12, it is convenient to heat the inside of the tank body 2.

[0027] Brief description of the use process: the electric heating tube 12 inside the annular electric heating rod sleeve 11 heats the inside of the tank body 2, and the insulation layer 7 installed on the right side of the internal bonding layer 6 of the tank body 2 insulates the inside of the tank body 2 to prevent heat loss, and the anti-cracking protective layer 8 and the refractory brick layer 9 on the right side of the insulation layer 2 block the high heat inside the interlayer 10 to prevent damage to the insulation layer 7 due to excessive heat, thereby improving the insulation effect of the tank body 2, avoiding crystallization of molten salt, and improving the use of the device.

[0028] Embodiment 2:

[0029] refer to Figure 1 , Figure 2 , Figure 3A molten salt storage tank of a trough type solar thermal power station, an inner liner 16 is fixedly installed on the right side of a partition 10, an epoxy primer 17 is fixedly installed on the right side of the inner liner 16, a polyethylene coating 18 is fixedly installed on the right side of the epoxy primer 17, a copolymer glue 19 is fixedly installed on the right side of the polyethylene coating 18, and a polymer composite anti-corrosion layer 20 is fixedly installed on the right side of the copolymer glue 19. The inner liner 16 is installed inside the partition 10, and the epoxy primer 17 is installed on the inner wall of the inner liner 16. After the polyethylene coating 18 is installed on the surface of the epoxy primer 17 to protect the inner wall of the tank body 2, the polymer composite anti-corrosion layer 20 is installed on the right side of the copolymer glue 19 to perform anti-corrosion treatment on the inside of the tank body 2, which can effectively improve the corrosion resistance of the storage tank to molten salt, avoid corrosion to the inner wall of the tank body 2, and increase the service life of the tank body 2.

[0030] refer to Figure 3 The heat-insulating layer 7 is made of non-combustible composite expanded polystyrene. By arranging the non-combustible composite expanded polystyrene, the thermosetting property inside the tank body 2 can be improved.

[0031] refer to Figure 3 The polymer composite anti-corrosion layer 20 is a Fushimi Blue 418 anti-corrosion material. By setting the Fushimi Blue 418 anti-corrosion material, the corrosion resistance of the inside of the tank body 2 can be improved.

[0032] Brief description of the use process: an inner liner 16 is installed inside the partition 10, an epoxy primer 17 is installed on the inner wall of the inner liner 16, a polyethylene coating 18 is installed on the surface of the epoxy primer 17 to protect the inner wall of the tank body 2, and then a polymer composite anti-corrosion layer 20 is installed on the right side of the copolymer glue 19 to perform anti-corrosion treatment on the inside of the tank body 2, which can effectively improve the corrosion resistance of the storage tank to molten salt, avoid corrosion to the inner wall of the tank body 2, and increase the service life of the tank body 2.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A molten salt storage tank for a trough-type solar thermal power plant, comprising a concrete base (1), characterized in that: A tank body (2) is fixedly mounted on the top of the concrete base (1); an adhesive layer (6) is fixedly mounted on the right side of the tank body (2); an insulating layer (7) is fixedly mounted on the right side of the adhesive layer (6); an anti-cracking protective layer (8) is fixedly mounted on the right side of the insulating layer (7); a refractory brick layer (9) is fixedly mounted on the right side of the anti-cracking protective layer (8); an interlayer (10) is fixedly mounted on the right side of the refractory brick layer (9); an inner liner (16) is fixedly mounted on the right side of the interlayer (10); an epoxy primer (17) is fixedly mounted on the right side of the inner liner (16); a polyethylene coating (18) is fixedly mounted on the right side of the epoxy primer (17); a copolymer glue (19) is fixedly mounted on the right side of the polyethylene coating (18); and a polymer composite anti-corrosion layer (20) is fixedly mounted on the right side of the copolymer glue (19).

2. The molten salt storage tank of a trough type CSP power station according to claim 1, characterized in that: A salt inlet pipe (3) and a salt outlet pipe (4) are fixedly installed on the left and right sides of the tank body (2), and a valve (5) is fixedly installed on one side of the salt inlet pipe (3) and the salt outlet pipe (4).

3. The molten salt storage tank of a trough type CSP power station according to claim 1, characterized in that: An annular electric heating rod sleeve (11) is fixedly installed inside the partition (10), an electric heating pipe (12) is fixedly installed inside the annular electric heating rod sleeve (11), a flange (13) is fixedly installed on the left side of the annular electric heating rod sleeve (11), a mounting seat (14) is fixedly installed on the left side of the flange (13), and an electric heating pipe connector (15) is fixedly installed on the left side of the mounting seat (14).

4. The molten salt storage tank of a trough type CSP power station according to claim 1, characterized in that: The thermal insulation layer (7) is made of non-combustible composite expanded polystyrene.

5. The molten salt storage tank of a trough type CSP power station according to claim 1, characterized in that: The polymer composite anti-corrosion layer (20) is Fushimi Blue 418 anti-corrosion material.

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